Home / 20,756.48-31,136.62-8,273.48

Finding the Fourth Proportional to 20,756.48, 31,136.62 and 8,273.48

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Solution

The fourth proportional to 20,756.48, 31,136.62 and 8,273.48 is: 12,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.48 : 31,136.62 = 8,273.48 : x
  2. Step 2: Convert to fraction form
    20,756.48/31,136.62 = 8,273.48/x
  3. Step 3: Cross multiply
    20,756.48x = 31,136.62 × 8,273.48
  4. Step 4: Simplify right side
    20,756.48x = 257,608,202.84
  5. Step 5: Solve for x
    x = 257,608,202.84/20,756.48
  6. Step 6: Final answer
    x = 12,410.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.